{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "16588",
    "entityType": "User",
    "nonce": "0x6a2c3ef6fdd1743d13e87c32f5cf7412644408b6dcdced4920a6c55b42be14cc",
    "signature": "0x481ce6ea4a8b332cd5d69e29e6dc173e9611aa7a5bfdb5e8a2edba0d98df990b16669b5de6be96a709d87142053f28f5fc25c46a6e86cbf707af98027d488caa1b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}